石油学报 ›› 2018, Vol. 39 ›› Issue (7): 792-801.DOI: 10.7623/syxb201807006

• 地质勘探 • 上一篇    下一篇

基于地震波形结构属性识别河流相砂体叠置区

张运龙1,2, 丁峰2, 尹成2, 胡光义3, 范廷恩3, 张显文3   

  1. 1. 中国石油新疆油田公司 新疆克拉玛依 834000;
    2. 西南石油大学地球科学与技术学院 四川成都 610500;
    3. 中海油研究总院有限责任公司 北京 100028
  • 收稿日期:2017-12-06 修回日期:2018-05-06 出版日期:2018-07-25 发布日期:2018-08-01
  • 通讯作者: 张运龙,男,1992年2月生,2015年获西南石油大学理学院学士学位,现为西南石油大学地球科学与技术学院地质资源与地质工程专业硕士研究生,主要从事正演分析与地震属性解释研究工作。Email:942687172@qq.com
  • 作者简介:张运龙,男,1992年2月生,2015年获西南石油大学理学院学士学位,现为西南石油大学地球科学与技术学院地质资源与地质工程专业硕士研究生,主要从事正演分析与地震属性解释研究工作。Email:942687172@qq.com
  • 基金资助:

    国家科技重大专项(2016ZX05025-001-001)和中国海洋石油有限公司科技外协项目(CCL2016RCPS0110RSN)资助。

The identification of fluvial sand-body superimposed area based on seismic waveform structure attributes

Zhang Yunlong1,2, Ding Feng2, Yin Cheng2, Hu Guangyi3, Fan Ting'en3, Zhang Xianwen3   

  1. 1. PetroChina Xinjiang Oilfield Company, Xinjiang Karamay 834000;
    2. School of Geosciences and Technology, Southwest Petroleum University, Sichuan Chengdu 610500;
    3. CNOOC Research Institute Co. Ltd., Beijing 100028, China
  • Received:2017-12-06 Revised:2018-05-06 Online:2018-07-25 Published:2018-08-01

摘要:

在河流相储层中,砂体叠置现象非常普遍,砂体单层厚度相对较薄,横向变化复杂,受地震资料分辨率所限及断层发育的影响,砂体边界不易识别,增加了河流沉积砂体的储层预测难度。在前人研究的基础上,首先建立河流相沉积砂体叠置模型,正演分析叠置砂体在地震记录上的波形强弱、尖锐度、稳定性、对称性变化特征以及同相轴的连续性;其次通过模型验证在一个周期时窗上提取波形结构属性的有效性,并提出利用波形结构属性识别砂体叠置区的方法;最后应用实际资料,验证了基于波形结构属性识别砂体叠置区方法的可行性。

关键词: 地震波, 河流相, 叠置砂体边界, 波形结构属性, 时窗

Abstract:

The phenomenon of sand-body superimposition is commonly seen in the fluvial facies reservoirs where the sand-body has thin single-layer thickness and complex lateral variation. Limited by seismic resolution and the influence of fault development, it is not easy to identify the sand-body boundary, which increases the difficulty in the reservoir prediction of fluvial sedimentary sand-body. Based on previous research, the model of fluvial sedimentary sand-body superimposition is set up firstly for forward analysis on the seismic records of superimposed sand-body, such as the changes in waveform strength, sharpness, stability and symmetry as well as the continuity of event. Then, the model is used to validate the effectiveness of waveform structure attributes extracted from a time window of a period. Meanwhile, this study also proposes the method of applying waveform structure attributes to identify sand-body superimposed area. Finally, the feasibility of such method is verified by practical application.

Key words: seismic wave, fluvial facies, superimposed sand-body boundary, waveform structure attributes, time window

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